Mobile OS Interview Questions
Questions Answers Views Company eMail

What’s the difference between an “app id” and a “bundle id” and what is each used for?

624

What is a category and when is it used?

610

What are “strong” and “weak” references? Why are they important and how can they be used to help control memory management and avoid memory leaks?

524

What are the limits of accessibility ?

594

Explain the characteristics of ios?

545

Explain place holder constraint

518

Explain differences between foundation and corefoundation

581

What is auto-layout?

629

What is the difference between let and var in swift?

609

What is the difference between atomic and non-atomic properties? Which is the default for synthesized properties? When would you use one over the other?

521

Explain the difference between copy and retain?

678

What is the difference between synchronous & asynchronous task ?

545

Why do you generally create a weak reference when using self in a block?

610

what’s accessibilityhint?

570

What is made up of nserror object?

551


Un-Answered Questions { Mobile OS }

What are the names of the specific logcats?

622


Explain about the windows phone?

643


Explain some common execution states in ios?

527


Which is better colour os or miui?

651


Is ios development hard?

600






What is Content Provider in Android?

662


What is a function in swift?

564


What is ios appdelegate?

561


What are regular expression and responder chain in swift?

703


How is ubuntu operating system?

460


What is the methods for unzip file in AFNetworking

1483


What is dynamic in swift?

557


How do I enable google play services on android?

619


What is onlistitemclick()?

647


Suppose I am trying to receive toast notifications in emulator app. I got everything setup but notification does not show up in emulator at all?

622